一种高压蓄能液压助力制动系统在商用车上的应用

为了摆脱车辆对真空源及真空度、气压等的限制,文章提出一种采用高压蓄能液压助力制动系统代替传统真空助力器;然后通过采用高压蓄能液压助力制动系统在某商用轻卡车辆进行制动选型的理论计算校核,替代原车真空助力器进行实车改制、调试匹配;最后进行制动性能对比测试。结果表明,该系统在制动性能及踏板感上均优于真空助力器,支持4.5t以上大吨位载重,通过该方案的理论分析与实车改制测试,结果符合预期,具备一定的工程应用价值。

制动类型对比与性能提升的研究

通过对制动系统不同类型的对比试验,确定踏板制动行程与操纵力关系曲线,并结合不同制动类型固有特点,为不同制动性能要求的三轮摩托车进行合理的制动系统选型;同时,结合不同制动类型本身固有特点,对减小制动系统无效行程,提升整车制动性能进行分析研究。

Establishment of Knowledge Base Management System and the Type Selection of Mechanism for Mechanism Kinematic Scheme

Firstly data standardization technology and combined classification method have been applied to carry out classification of kinematic behaviors and mechanisms in the mapping field between the kinematic behavior level and the mechanism level of conceptual design.The principle of computer coding and storing have been built to give a fast and broad selection of mechanisms that meets the requirements of basic motion characters.Then on the basis of mentioned above,the heuristic matching propagation principle (HMPP) of kinematic behaviors and its true table serves as a guide to perform mechanism types selection.Finally an application is given to indicate its practicability and effectiveness.